diff --git a/adapters/t3code/README.md b/adapters/t3code/README.md
index c1ece3e..9194d5f 100644
--- a/adapters/t3code/README.md
+++ b/adapters/t3code/README.md
@@ -21,8 +21,9 @@ Microbridge uses T3 Code's authenticated public endpoints:
 
 It never reads T3 Code databases, bootstrap credentials, or desktop internals.
 
-The compatibility suite is pinned to T3 server `0.0.28` and upstream contract
-commit `ebe8afb1df357423a0e036b388af3e739d640205`. Other server versions are
+The compatibility suite is pinned to T3 server bases `0.0.28` and `0.0.29`
+(including `*-nightly.…` builds of those bases) against upstream contract
+commit `5d34f9ff235115d43a6cb4b4561d10badf218b87`. Other server versions are
 reported as **Incompatible** until Microbridge verifies and ships their contract.
 The adapter opens threads with T3 Code's semantic deep link. Reasoning effort
 stays disabled because the current paired HTTP snapshot includes the selected
@@ -30,6 +31,7 @@ value but not the provider/model option descriptors needed to choose the next
 valid level safely. Microbridge does not fake this with key presses or private
 desktop state.
 
-The compatibility target is the contract present in `pingdotgg/t3code` as of
-July 18, 2026. Authentication failures return to **Needs setup**; transport
-failures show **Connecting** and retry with the existing paired credential.
+The compatibility target is the orchestration shell/dispatch contract present
+in `pingdotgg/t3code` as of July 20, 2026. Authentication failures return to
+**Needs setup**; transport failures show **Connecting** and retry with the
+existing paired credential.
diff --git a/crates/microbridged/src/t3code.rs b/crates/microbridged/src/t3code.rs
index c4b2ec8..2ba8efe 100644
--- a/crates/microbridged/src/t3code.rs
+++ b/crates/microbridged/src/t3code.rs
@@ -24,8 +24,11 @@ pub const T3_OWNER: u64 = u64::MAX - 1;
 const KEYCHAIN_SERVICE: &str = "ai.microbridge.t3code";
 #[cfg(target_os = "macos")]
 const KEYCHAIN_ACCOUNT: &str = "paired-environment";
-const SUPPORTED_SERVER_VERSION: &str = "0.0.28";
-const PINNED_CONTRACT_COMMIT: &str = "ebe8afb1df357423a0e036b388af3e739d640205";
+/// Base server versions whose paired HTTP orchestration contract Microbridge
+/// has verified. Nightly builds of these bases (`0.0.29-nightly.…`) are also
+/// accepted — T3 ships nightlies with the same shell/dispatch surface.
+const SUPPORTED_SERVER_VERSIONS: &[&str] = &["0.0.28", "0.0.29"];
+const PINNED_CONTRACT_COMMIT: &str = "5d34f9ff235115d43a6cb4b4561d10badf218b87";
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct T3Credential {
@@ -327,7 +330,7 @@ pub fn spawn(
                                     format!(
                                         "T3 Code server {} is incompatible with Microbridge's pinned {} contract ({}). Update Microbridge before reconnecting.",
                                         descriptor.server_version,
-                                        SUPPORTED_SERVER_VERSION,
+                                        SUPPORTED_SERVER_VERSIONS.join(" / "),
                                         &PINNED_CONTRACT_COMMIT[..12],
                                     ),
                                 );
@@ -427,7 +430,12 @@ async fn fetch_descriptor(
 }
 
 fn contract_is_supported(server_version: &str) -> bool {
-    server_version == SUPPORTED_SERVER_VERSION
+    SUPPORTED_SERVER_VERSIONS.iter().any(|base| {
+        server_version == *base
+            || server_version
+                .strip_prefix(base)
+                .is_some_and(|rest| rest.starts_with("-nightly."))
+    })
 }
 
 async fn fetch_shell(
@@ -728,9 +736,13 @@ mod tests {
     #[test]
     fn pins_the_supported_t3_contract_version() {
         assert!(contract_is_supported("0.0.28"));
-        assert!(!contract_is_supported("0.0.28-nightly.1"));
+        assert!(contract_is_supported("0.0.28-nightly.1"));
+        assert!(contract_is_supported("0.0.29"));
+        assert!(contract_is_supported("0.0.29-nightly.20260720.859"));
         assert!(!contract_is_supported("0.0.27"));
-        assert!(!contract_is_supported("0.0.29"));
+        assert!(!contract_is_supported("0.0.30"));
+        assert!(!contract_is_supported("0.0.290"));
+        assert!(!contract_is_supported("0.0.29-beta.1"));
         assert_eq!(PINNED_CONTRACT_COMMIT.len(), 40);
     }